Powertech 8kw “no system comm”

[Rhino1965]

I have a 2016 Powertech 8kw mounted on my semi/sleeper. There is a remote panel inside to start the gen. It has error on it that says “ no system comm” I’ve unplugged and reconnected the pigtails over and over to no avail. It goes through the reboot process but the error always comes up. I can’t start the unit from inside I have to go open the covers to start and shut it down. Help! Any ideas on the issue? I’m mechanically inclined but this has me stumped. Thank you